Number
200
- Positive
- Even
- Composite
- 3 digits
200 is an even 3-digit integer and a composite number. It has 12 divisors and a digital root of 2.
Number properties
ParityEvendivisible by 2
SignPositive
PrimalityComposite
Absolute value200
Digit count3
Digit sum2
Digital root2repeated digit sum
PalindromicNoreads differently backwards
Happy numberNosquared-digit sums reach 1
Harshad numberYesdivisible by its own digit sum
Factors & divisors
Prime factorisation2^3 × 5^2
Distinct prime factors22, 5
Number of divisors12
Sum of divisors σ(n)465
Aliquot sum265sum of the proper divisors
ClassificationAbundantthe aliquot sum exceeds the number
Euler's totient φ(n)80integers below n that share no factor with it
SquarefreeNohas a repeated prime factor
All divisors1, 2, 4, 5, 8, 10, 20, 25, 40, 50, 100, 20012 in total
Arithmetic
Representations
Decimal200
Binary110010008 bits
Octal310
HexadecimalC8
Base 365K
Roman numeralCC
In wordstwo hundred
Ordinaltwo hundredth
Scientific notation2 × 10^2
Engineering notation200
Nearest landmarks
Powers & multiples
200 to the power 240,000
200 to the power 38,000,000
200 to the power 41,600,000,000
200 to the power 5320,000,000,000
First ten multiples200, 400, 600, 800, 1,000, 1,200, 1,400, 1,600, 1,800, 2,000
Powers of twoBetween 2^7 (128) and 2^8 (256)
Divisibility tests
Divisible by 2Yes
Divisible by 3No, remainder 2
Divisible by 4Yes
Divisible by 5Yes
Divisible by 6No, remainder 2
Divisible by 7No, remainder 4
Divisible by 8Yes
Divisible by 9No, remainder 2
Divisible by 10Yes
Divisible by 11No, remainder 2
Divisible by 12No, remainder 8
Divisible by 100Yes
Collatz (3n + 1) trajectory
Steps to reach 126the total stopping time
Highest value reached200
Reaches 1Yesthe Collatz conjecture says every positive integer does, but it is unproven
First steps200 → 100 → 50 → 25 → 76 → 38 → 19 → 58 → 29 → 88 → …
Last steps… → 5 → 16 → 8 → 4 → 2 → 1
As a percentage & fraction
As a percentage20,000%
200% as a decimal2
200% of 100200
200% of 1,0002,000
As a fraction of 100200/100
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Derived from 200
Other readings
Also reads as
#220000 (colour)
- #220000
- Red
- Dark
- Nearest: Black
#220000 is a red with RGB values 34, 0, 0 and HSL 0°, 100%, 7%. It is a dark colour, so white text on it reaches 19.7:1 contrast (AAA for normal text). The nearest named colour is Black.
Colour values
#220000#220000
HEX#220000
HEX (short)#200
RGBrgb(34, 0, 0)
RGB (0–1)0.1333, 0, 0
RGB percentages13.3%, 0%, 0%
HSLhsl(0, 100%, 6.7%)
HSV / HSBhsv(0, 100%, 13.3%)
CMYK0%, 100%, 100%, 86.7%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer2,228,224
CSS custom property--colour: #220000;
Brightness & contrast
Relative luminance0.0034WCAG 2.x, 0 is black and 1 is white
Perceived brightness18.6 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundWhitecontrast 19.66:1
Contrast with white19.66:1WCAG normal text: AAA
Contrast with black1.07:1WCAG normal text: Fail
Greyscale equivalent#070707
Inverted#DDFFFF
Colour vision & accessibility
Distinguishable without hueYesnever rely on hue alone to carry meaning
Contrast with white, large text19.66:1WCAG large text: AAA
Contrast with black, large text1.07:1WCAG large text: Fail
Named colours
Hue familyred
CSS keyword usableNo exact keyword
Colour harmonies
Complementary#002222
Analogous#220011, #221100
Triadic#002200, #000022
Split complementary#002211, #001122
Tetradic#112200, #002222, #110022
Tints, shades & saturation
Channel breakdown
R34
G0
B0
Red34 (13.3%)
Green0 (0%)
Blue0 (0%)
Hue0°
Saturation (HSL)100%
Lightness6.67%
Dominant channelRed
Hex per channelR 22 · G 00 · B 00
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Harmonies
Similar named colours
Also reads as
HTTP 200 OK (http status)
- 200 OK
- Success
- RFC 9110
HTTP 200 OK is a success response: the request succeeded. It is defined in RFC 9110, and the request was received, understood and accepted.
What it means
Status code200
Reason phraseOKadvisory only; clients must not depend on the wording
Class2xx Success
MeaningThe request succeeded
Defined inRFC 9110
Cacheable by defaultYesheuristically cacheable without explicit headers (RFC 9110 §15.1)
How clients behave
Indicates an errorNo
Whose faultNeither, it succeeded
Body expectedUsually
The 2xx class
Class meaningThe request was received, understood and accepted
Codes in this class10
Lowest in class200
Highest in class226
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